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standard candle

Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A candela.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any astronomical object of known absolute magnitude. Its distance can then be calculated from its apparent magnitude.

from the GNU version of the Collaborative International Dictionary of English

  • n. a special form of candle employed as a standard in photometric measurements; usually, a candle of spermaceti so constructed as to burn at the rate of 120 grains, or 7.8 grams, per hour.
  • adj. See under Candle, and Gauge.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin

Etymologies

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